score/src/objectgetnoprotection.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup RTEMSScoreObject
0007  *
0008  * @brief This source file contains the implementation of
0009  *   _Objects_Get_no_protection().
0010  */
0011
0012 /*
0013  *  COPYRIGHT (c) 1989-2002.
0014  *  On-Line Applications Research Corporation (OAR).
0015  *
0016  * Redistribution and use in source and binary forms, with or without
0017  * modification, are permitted provided that the following conditions
0018  * are met:
0019  * 1. Redistributions of source code must retain the above copyright
0020  *    notice, this list of conditions and the following disclaimer.
0021  * 2. Redistributions in binary form must reproduce the above copyright
0022  *    notice, this list of conditions and the following disclaimer in the
0023  *    documentation and/or other materials provided with the distribution.
0024  *
0025  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0026  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0027  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0028  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0029  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0030  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0031  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0032  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0033  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0034  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0035  * POSSIBILITY OF SUCH DAMAGE.
0036  */
0037
0038 #ifdef HAVE_CONFIG_H
0039 #include "config.h"
0040 #endif
0041
0042 #include <rtems/score/objectimpl.h>
0043
0044 Objects_Control *_Objects_Get_no_protection(
0045   Objects_Id                 id,
0046   const Objects_Information *information
0047 )
0048 {
0049   Objects_Id delta;
0050   Objects_Id maximum_id;
0051   Objects_Id end;
0052
0053   maximum_id = information->maximum_id;
0054   delta = maximum_id - id;
0055   end = _Objects_Get_index( maximum_id );
0056
0057   if ( RTEMS_PREDICT_TRUE( delta < end ) ) {
0058     return information->local_table[ end - OBJECTS_INDEX_MINIMUM - delta ];
0059   }
0060
0061   /*
0062    *  This isn't supported or required yet for Global objects so
0063    *  if it isn't local, we don't find it.
0064    */
0065   return NULL;
0066 }